Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Local High Pressure Torsion: : a process for creating targeted heterogeneities in metallic materials

Beygelzimer, E. ; Davydenko, O. ; Beygelzimer, Y. ; Tereshchenko, Y. ; Bondarchuk, V. ; Shyvaniuk, V. ; Fataiev, R. ; Shapiro, I. ; Balakin, V. and Biba, N. , et al. (2025) In International Journal of Material Forming 18(1).
Abstract

In the light of recent developments in the design of structural materials, micro-architected heterogenous-structure metals are considered among most structurally efficient. In this work, a new technique for Local High Pressure Torsion (L-HPT) enabling the creation of heterogeneous structures through localised deformation processing in sheet metals by impeding a rotating punch is proposed. Using AA5083 aluminium alloy as an example, we show experimentally that the rotation of the punch sets adjacent material layers in motion. This results in more than two-fold increase in material hardness over initial level in the workpiece bulk with rather sharp gradients in hardness level transition. The maximum hardness is observed at the peripheral... (More)

In the light of recent developments in the design of structural materials, micro-architected heterogenous-structure metals are considered among most structurally efficient. In this work, a new technique for Local High Pressure Torsion (L-HPT) enabling the creation of heterogeneous structures through localised deformation processing in sheet metals by impeding a rotating punch is proposed. Using AA5083 aluminium alloy as an example, we show experimentally that the rotation of the punch sets adjacent material layers in motion. This results in more than two-fold increase in material hardness over initial level in the workpiece bulk with rather sharp gradients in hardness level transition. The maximum hardness is observed at the peripheral edge of a punch tip. Finite-element modelling of the L-HPT process confirmed that the rotational flow of workpiece material leads to the accumulation of shear strain. The level of accumulated strain increases with an increase in friction at the contact surface. Further analysis based on dimensionality theory revealed that for such an L-HPT configuration the level of equivalent strain is directly proportional to the ratio of rotation-to-translation speeds at the punch.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Architected microstructures, Deformation processing, Finite element modelling, Friction factor, Gradient structure, Local High Pressure Torsion (L-HPT)
in
International Journal of Material Forming
volume
18
issue
1
article number
16
pages
12 pages
publisher
Springer
external identifiers
  • scopus:85217989613
ISSN
1960-6206
DOI
10.1007/s12289-025-01879-7
project
Microstructure design in metallic materials using deformation processing based techniques
Studying Deformation and Fracture in Heterogeneous 3D-Architectured Material Microstructures
Topological control of microstructures for advanced material engineering
language
English
LU publication?
yes
id
00c3326f-f2b1-4bd9-87c7-664d449bc237
date added to LUP
2025-03-05 08:35:08
date last changed
2025-04-30 12:50:37
@article{00c3326f-f2b1-4bd9-87c7-664d449bc237,
  abstract     = {{<p>In the light of recent developments in the design of structural materials, micro-architected heterogenous-structure metals are considered among most structurally efficient. In this work, a new technique for Local High Pressure Torsion (L-HPT) enabling the creation of heterogeneous structures through localised deformation processing in sheet metals by impeding a rotating punch is proposed. Using AA5083 aluminium alloy as an example, we show experimentally that the rotation of the punch sets adjacent material layers in motion. This results in more than two-fold increase in material hardness over initial level in the workpiece bulk with rather sharp gradients in hardness level transition. The maximum hardness is observed at the peripheral edge of a punch tip. Finite-element modelling of the L-HPT process confirmed that the rotational flow of workpiece material leads to the accumulation of shear strain. The level of accumulated strain increases with an increase in friction at the contact surface. Further analysis based on dimensionality theory revealed that for such an L-HPT configuration the level of equivalent strain is directly proportional to the ratio of rotation-to-translation speeds at the punch.</p>}},
  author       = {{Beygelzimer, E. and Davydenko, O. and Beygelzimer, Y. and Tereshchenko, Y. and Bondarchuk, V. and Shyvaniuk, V. and Fataiev, R. and Shapiro, I. and Balakin, V. and Biba, N. and Orlov, D.}},
  issn         = {{1960-6206}},
  keywords     = {{Architected microstructures; Deformation processing; Finite element modelling; Friction factor; Gradient structure; Local High Pressure Torsion (L-HPT)}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Springer}},
  series       = {{International Journal of Material Forming}},
  title        = {{Local High Pressure Torsion: : a process for creating targeted heterogeneities in metallic materials}},
  url          = {{http://dx.doi.org/10.1007/s12289-025-01879-7}},
  doi          = {{10.1007/s12289-025-01879-7}},
  volume       = {{18}},
  year         = {{2025}},
}